solenoid valve - types ev220b 15-50 and ev220bw 40-50 · © danfoss | dcs (az) | 2018.07 on off 24h...

© Danfoss | DCS (az) | 2018.07

Data sheet

Solenoid valve Types EV220B 15-50 and EV220BW 40-50

IC.PD.200.4D.02 | 1

EV220B 15-50 and EV220BW 40-50 are a universal indirect servo-opera ted 2/2-way solenoid valve program. Valve body in brass, dezincification resistant brass and stainless steel ensures that a broad variety of application can be covered.Built-in pilot filter as standard, adjustable closing time and enclosures up to IP67 ensures optimal performance even under critical working conditions.

y For water, steam, oil, compressed air and gases

y Flow range for water: 1.3 – 160 m³/h

y Differential pressure: 0.3 – 16 bar

y Media temperature from -30 – 140 °C

y Ambient temperature: Up to 80 °C

y Coil enclosure: Up to IP67

y Thread connections: From G ½ – G 2

y DN 15 – 50

y Viscosity: Up to 50 cSt

y Water hammer damped

y Built in filter for protection of pilot system

y Adjustable closing time available

y EV220B 15-50 NC and NO brass version for neutral liquids and gasses

y EV220B 15-50 NC DZR brass version for neutral and slightly aggressive liquids and gases

y EV220B 15-50 NC Stainless Steel version for neutral and aggressive liquids and gases

y EV220BW 40-50 NC+NO EPDM and WRAS for drinking water

Features and versions:


ON

OFF

24h

Data sheet | Solenoid valves, type EV220B 15-50 and EV220BW 40-50

IC.PD.200.4D.02 | 2

ConnectionISO228/1

Sealmate rial

Orifice size

Kv - value

Differential pressure

min. to max.6)

Max. working pressure

Mediatemperature min. to max. Approval Code number

[m³/h] [bar] [bar] [°C]

G ½

EPDM 1) 15 4 0.3 – 16 16 -30 – 120 4) 032U7115

NBR 2) 15 4 0.3 – 16 16 -10 – 90 032U7170

FKM 3) 15 4 0.3 – 10 10 0 – 100 5) 032U7116

G ¾

EPDM 1) 20 8 0.3 – 16 16 -30 – 120 4) 032U7120

NBR 2) 20 7.5 0.3 – 16 16 -10 – 90 032U7171

FKM 3) 20 8 0.3 – 10 10 0 – 100 5) 032U7121

G 1

EPDM 1) 25 11 0.3 – 16 16 -30 – 120 4) 032U7125

NBR 2) 25 11 0.3 – 16 16 -10 – 90 032U7172

FKM 3) 25 11 0.3 – 10 10 0 – 100 5) 032U7126

G 1 ¼

EPDM 1) 32 18 0.3 – 12 12 -30 – 120 4) 032U7132

NBR 2) 32 18 0.3 – 12 12 -10 – 90 032U7173

FKM 3) 32 18 0.3 – 10 10 0 – 100 5) 032U7133

G 1 ½

EPDM 1) 40 24 0.3 – 12 12 -30 – 120 4) 032U7140

NBR 2) 40 24 0.3 – 12 12 -10 – 90 032U7174

FKM 3) 40 24 0.3 – 10 10 0 – 100 5) 032U7141

G 2

EPDM 1) 50 40 0.3 – 12 12 -30 – 120 4) 032U7150

NBR 2) 50 40 0.3 – 12 12 -10 – 90 032U7175

FKM 3) 50 40 0.3 – 10 10 0 – 100 5) 032U71511) EPDM is recommended for water.2) NBR is suitable for oil, water and air.3) FKM is suitable for oil and air. For water at max. +60 °C.4) Low pressure steam, 4 bar: Max. 140 °C. BA AC/DC and BB/BE DC coils: Max. 100 °C. BO and BP coils: Max. 90 °C.5) For water: Max. 60 °C. BO and BP coils: Max. 90 °C.6) It is recommended to use a filter in front of the valve.7) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

EV220B 15-50Brass valve body, NC

y WRAS (see table below)

y ACS

y PZH

y In accordance with: - Low Voltage Directive 2014/35/EU - EN60730-1 - EN60730-2-8 - Pressure Equipment Directive 2014/68/EU

y UL recognized


ON

OFF

24h


IC.PD.200.4D.02 | 3

ConnectionISO228/1

Sealmate rial

Orifice size

Kv - value


min. to max.6)


Mediatemperature min. to max. Approval Code number

[m³/h] [bar] [bar] [°C]

G 1 ½ EPDM 40 24 0.3 – 10 10 0 – 90 132U4003

G 2 EPDM 50 40 0.3 – 10 10 0 – 90Pending

132U5003

1) It is recommended to use a filter in front of the valve.2) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

EV220BW 40-50with sealings fordrinking waterBrass valve body, NC

y WRAS



ON

OFF

24h


IC.PD.200.4D.02 | 4

ConnectionISO228/1

Sealmate rial

Orifice size

Kv - value


min. to max.


Mediatemperature min. to max. Approval Code no.

[m³/h] [bar] 6) [bar] [°C]

G ½

EPDM 1) 15 4 0.3 – 10 10 -30 – 120 4) 032U7117

NBR 2) 15 4 0.3 – 10 10 -10 – 90 032U7180

FKM 3) 15 4 0.3 – 10 10 0 – 100 5) 032U7118

G ¾

EPDM 1) 20 8 0.3 – 10 10 -30 – 120 4) 032U7122

NBR 2) 20 7.5 0.3 – 10 10 -10 – 90 032U7181

FKM 3) 20 8 0.3 – 10 10 0 – 100 5) 032U7123

G 1

EPDM 1) 25 11 0.3 – 10 10 -30 – 120 4) 032U7127

NBR 2) 25 11 0.3 – 10 10 -10 – 90 032U7182

FKM 3) 25 11 0.3 – 10 10 0 – 100 5) 032U7128

G 1 ¼

EPDM 1) 32 18 0.3 – 10 10 -30 – 120 4) 032U7134

NBR 2) 32 18 0.3 – 10 10 -10 – 90 032U7183

FKM 3) 32 18 0.3 – 10 10 0 – 100 5) 032U7135

G 1 ½

EPDM 1) 40 24 0.3 – 10 10 -30 – 120 4) 032U7142

NBR 2) 40 24 0.3 – 10 10 -10 – 90 032U7184

FKM 3) 40 24 0.3 – 10 10 0 – 100 5) 032U7143

G 2

EPDM 1) 50 40 0.3 – 10 10 -30 – 120 4) 032U7152

NBR 2) 50 40 0.3 – 10 10 -10 – 90 032U7185

FKM 3) 50 40 0.3 – 10 10 0 – 100 5) 032U71531) EPDM is recommended for water.2) NBR is suitable for oil, water and air.3) FKM is suitable for oil and air. For water at max. 60 °C.4) Low pressure steam, 4 bar: Max. 140 °C. BA AC/DC and BB/BE DC coils: Max. 100 °C. BO and BP coils: Max. 90 °C.5) For water: Max. 60 °C. BO and BP coils: Max. 90 °C.6) It is recommended to use a filter in front of the valve.7) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

EV220B 15-50Brass valve body, NO

y WRAS (see table below)

y ACS

y PZH


y UL recognized


ON

OFF

24h


IC.PD.200.4D.02 | 5

ConnectionISO228/1

Sealmate rial

Orifice size

Kv - value


min. to max.


Mediatemperature min. to max. Approval Code no.

[m³/h] [bar] 6) [bar] [°C]

G 1 ½ EPDM 40 24 0.3 – 10 10 0 – 90Pending

132U4004

G 2 EPDM 50 40 0.3 – 10 10 0 – 90Pending

132U5004

1) It is recommended to use a filter in front of the valve.2) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

EV220BW 40-50with sealings fordrinking waterBrass valve body, NO

y WRAS




IC.PD.200.4D.02 | 6

Technical data, brass valve body, NC and NO

Main type EV220B 15B EV220B 20B EV220B 25B EV220B 32B EV220B 40B EV220B 50B

Time to open [ms] 1) 40 40 300 1000 1500 5000

Time to close [ms] 1) 350 1000 1000 2500 4000 10000 1) The times are indicative and apply to water. The exact times will depend on the pressure conditions. Closing times can be changed by replacement of the equalizing orifice.

Installation Optional, but vertical solenoid system is recommended

Max. test pressure 20 bar

Viscosity Max. 50 cSt

Materials

Valve body: Brass W.no. 2.0402

Armature: Stainless steel W.no. 1.4105 / AISI 430 FR

Armature tube: Stainless steel W.no. 1.4306 / AISI 304 L

Armature stop: Stainless steel W.no. 1.4105 / AISI 430 FR

Springs Stainless steel W.no. 1.4310 / AISI 301

O-rings: EPDM, FKM or NBR

Valve plate: EPDM, FKM or NBR

Diaphragm: EPDM, FKM or NBR


ON

OFF

24h


IC.PD.200.4D.02 | 7

Main type EV220B 15BD EV220B 20BD EV220B 25BD EV220B 32BD EV220B 40BD EV220B 50BD

Time to open [ms] 1) 40 40 300 1000 1500 5000


ConnectionISO228/1

Sealmate-

rial

Orifice size

Kv-valueDifferential

pressureMin. – max.

Max.workingpressure

Media temperature min. to max. Approval Code no.

[m³/h] [bar] [bar] [°C]

G ½ EPDM 1) 15 4 0.3 –16 16 -30 – 120 2) 032U5815

G ¾ EPDM 1) 20 8 0.3 –16 16 -30 – 120 2) 032U5820

G 1 EPDM 1) 25 11 0.3 –16 16 -30 – 120 2) 032U5825

G 1 ¼ EPDM 1) 32 18 0.3 –12 12 -30 – 120 2) 032U5832

G 1 ½ EPDM 1) 40 24 0.3 –12 12 -30 – 120 2) 032U5840

G 2 EPDM 1) 50 40 0.3 –12 12 -30 – 120 2) 032U58501) EPDM is recommended for water.2) Low pressure steam, 4 bar: Max. 140 °C. BA AC/DC and BB/BE DC coils: Max. 100 °C. BO and BP coils: Max. 90 °C.6) It is recommended to use a filter in front of the valve.7) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

Installation Optional, but vertical solenoid system is recommended.



Materials

Valve body: Dezincification resistant brass (DZR) CuZn36Pb2As / CZ132




Springs Stainless steel W.no. 1.4310 / AISI 301

Orifices Stainless steel W.no. 1.4404 / AISI 316L

Valve seat Stainless steel W.no. 1.4404 / AISI 316L

O-rings EPDM

Valve plate EPDM

Diaphragm EPDM

EV220B 15-50Dezincification resistant brass (DZR) Valve body, NC

Technical data

y WRAS

y ACS

y PZH


y UL recognized


ON

OFF

24h


IC.PD.200.4D.02 | 8

Main type EV220B 15SS EV220B 20SS EV220B 25SS EV220B 32SS EV220B 40SS EV220B 50SS

Time to open [ms] 1) 40 40 300 1000 1500 5000


ConnectionISO228/1

Sealmate rial

Orifice size

Kv - valueDifferential pressure

min. – max.

Max. workingpressure

Media temperature min. to max. Code no.

[m³/h] [bar] [bar] [°C]

G ½EPDM 1) 15 4 0.3 – 16 16 -30 – 120 2) 032U8500

FKM 2) 15 4 0.3 – 10 10 -30 – 120 2) 032U8506

G ¾EPDM 1) 20 8 0.3 – 16 16 -30 – 120 2) 032U8501

FKM 2) 20 8 0.3 – 10 10 -30 – 120 2) 032U8507

G 1EPDM 1) 25 11 0.3 – 16 16 -30 – 120 2) 032U8502

FKM 2) 25 11 0.3 – 10 10 -30 – 120 2) 032U8508

G 1 ¼EPDM 1) 32 18 0.3 – 12 12 -30 – 120 2) 032U8503

FKM 2) 32 18 0.3 – 10 10 -30 – 120 2) 032U8509

G 1 ½EPDM 1) 40 24 0.3 – 12 12 -30 – 120 2) 032U8504

FKM 2) 40 24 0.3 – 10 10 -30 – 120 2) 032U8510

G 2EPDM 1) 50 40 0.3 – 12 12 -30 – 120 2) 032U8505

FKM 2) 50 40 0.3 – 10 10 -30 – 120 2) 032U85111) EPDM is recommended for water. (steam max. +140 °C / 4 bar).2) FKM is suitable for oil and air. For water at max. +60 °C.3) Low pressure steam, 4 bar: Max. +140 °C. BA AC/DC and BB/BE DC coils: Max. +100 °C. BO and BP coils: Max. +90 °C.4) For water: Max. +60 °C. BO and BP coils: Max. +90 °C.6) It is recommended to use a filter in front of the valve.7) In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.

Installation Optional, but vertical solenoid system is recommended.



Materials

Valve body: Stainless steel W.no. 1.4581 / AISI 318




Springs: Stainless steel W.no. 1.4310 / AISI 301

Orifices: Stainless steel W.no. 1.4404 / AISI316L

O-rings: EPDM or FKM

Valve plate: EPDM or FKM

Diaphragm: EPDM or FKM

Technical data, stainless steel valve body, NC

EV220B 15-50Stainless steel valve body, NC

y PZH


y UL recognized


Dan

foss

32U17

83.10

Dan

foss

32U17

84.10


IC.PD.200.4D.02 | 9

Dimensions and weight: Brass, DZR brass and stainless steel, NC and NO

TypeL B B

1 [mm] / coil type H H

1

Weight without coil

[mm] [mm] BA BB / BE BG / BO BP [mm] [mm] [kg]

EV220B 15 80.0 52.0 32 46 68 45 99 15.0 0.7

EV220B 20 90.0 58.0 32 46 68 45 103 18.0 0.9

EV220B 25 109.0 70.0 32 46 68 45 113 22.0 1.3

EV220B 32 120.0 82.0 32 46 68 45 120 27.0 2.0

EV220B / BW 40 130.0 95.0 32 46 68 45 129 32.0 3.0

EV220B / BW 50 162.0 113.0 32 46 68 45 135 37.0 4.8

Dimensions

Mounting angle



IC.PD.200.4D.02 | 10

Below coils can be used with EV220B 15 – EV220B 50 – EV220BW 40-50

Coil Type Power consumption Enclosure Features

BA / BD, screw on9 W AC

15 W DCIP00

with spade connectorIP20 with protective cap,

IP65 with cable plug

BB, clip on10 W AC 18 W DC

IP00 with spade connector

IP20 with protective cap, IP65 with cable plug

BE, clip on10 W AC18 W DC

IP67 With terminal box

BF, clip on10 W AC18 W DC

IP67 With 1 m cable

BG, clip on12 W AC20 W DC

IP67 With terminal box

BN, clip on20 W26 VA

IP67Hum free

With terminal box and 1 m cable

BO, screw on10 W21 VA

IP67 only including seal kit

018Z0090

For explosion-risk environment zone 1.

With terminal box and 5 m cable

For further information and for ordering, see separate data sheet for coils.



IC.PD.200.4D.02 | 11

Universal electronic multi-timer, type ETM

y Outside adjustments

y Light weight and small size

y External adjustable timing from 1 minute to 45 minutes with 1 to 15 seconds drain open

y One solid state timer fits all coil voltages from 24 – 240 V AC

Technical data Type ET 20 M

Voltage 24 – 240 V AC / 50/60 Hz.

Power rating Max. 20 Watt

Enclosure IP00, IP65 with power connector (cable plug)

Electrical connection DIN connector ( DIN 43650-A)

Ambient operating temperature range -10 – 50 °C

Function Start with pulse

Interval timer 1 – 45 min.

“On” timer 1 – 15 sec.

Weight 0.084 kg

ApplicationVoltage To use with

coilAmbient temperature

Code no.[V AC] [°C]

External adjustable timing from 1 to 45 minutes with 1 to 15 seconds drain open. With manual override (test button). Electrical connection DIN 43650 A / EN 175 301-803-A

24 – 240 BA, BD, BB -10 – 50 042N0185

Dimensions

y Light diodes for indication

y All in one unit

y Manual override (test button)

Accessories:Cable plug

Application Code no.

GDM 2011 (grey) cable plug according to DIN 43650-A PG11 042N0156


Dan

foss

32U17

85.11

Dan

foss

32U94

8.10


IC.PD.200.4D.02 | 12

Manual override unit, tool operated

Used for manual override in event of power failure.Note: Valve height is increased by 16 mm.

The unit consists of:Manual override body4 screws3 O-rings (seal material NBR)

Size[DN]

Bodymaterial

Seal materialEqualizing

orificeMedia

Media temperature Code no.

FKM NBR EPDM[°C]

15 – 32Brass x x x n/a 2) Air, oil, water -10 – 90 032U0150

Stainless steel x x x n/a 2) Air, oil, water -10 – 90 032U0149

40 – 50 Stainless steel n/a 1) n/a 1) x n/a 2) Water -10 – 90 032U01491) Risk of functional failure.2) Original equalizing orifice to be used.

Manual override unit, hand operated

Used for manual override in event of power failure.

The unit consists of: Armature incl. closing springArmature tubeStainless steel valve bodyO-ring 3.68 x 1.78O-ring 19 x 1.5O-ring 5 x 2.54 screws4 nuts for transportation purpose only

Manual override unitincluding equalizing orifice, tool operated

Used for manual override in event of power failure.Note: Valve height is increased by 16 mm.

The unit consists of: Manual override body4 screws3 O-rings (seal material NBR)Equalizing orifice, size III

Size [DN]Body material


orificeMedia

Media temperature Code no.

FKM NBR EPDM[°C]

40 – 50 Brass x x x Size III 3) Water -10 – 90 032U02603) For FKM and NBR valves,it is recommended to change the equalizing orifice to size III, to obtain a proper function.

Size [DN]Body material


orificeMedia

Media temperature

[°C]Code no.

FKM NBR EPDM

15 – 32Brass n/a 1) n/a 1) x n/a 2) Water -30 – 120

032U7390Stainless steel n/a 1) n/a 1) x n/a 2) Water -30 – 120

40 – 50Brass n/a 1) n/a 1) x n/a 2) Water -30 – 120

Stainless steel n/a 1) n/a 1) x n/a 2) Water -30 – 1201) Risk of functional failure.2) Original equalizing orifice to be used.



IC.PD.200.4D.02 | 13

The kit comprises:An equalizing orifice includes 2 O-rings. The valves closing time can be changed by installing an equalizing orifice of a size which deviates from the standard valve:

y A shorter closing time is obtained with a larger orifice (the shorter closing time, the greater risk of water hammering)

y A longer closing time is obtained with a smaller orifice.

Equalizing orifice sizeSeal material Applicable in

Code no.

[mm] Brass DZR brass 3) / Stainless steel

0.5 EPDM 1)EV220B 15EV220B 20

032U0082 032U6310

0.8 EPDM 1)EV220B 25EV220B 32EV220B 40

032U0084 032U6311

1.2 FKM 2)EV220B 25EV220B 32

032U0085 032U6314

1.2 EPDM 1) EV220B 50 032U0086 032U6312

1.4 FKM 2)EV220B 40EV220B 50

032U0087 032U6315

Equalizing orifice

Adjustable orifice

Orifice Seal material Applicable in Material Code no.

Adjustable EPDM 1) All EV220B 15 – EV220B 50 valves Brass 032U0682

Adjustable FKM 2) All EV220B 15 – EV220B 50 valves Brass 032U06831) Approved by WRAS. Approved by Attestation de Conformite Sanitaire (ACS). EPDM is recommended for water. (Steam max. 40 °C / 4 bar).2) FKM is suitable for oil and air. For water at max. 60 °C.3) Dezincification resistant brass.

The kit comprises:An adjustable orifice including O-ring and gasket. The valves closing time can be adjusted by

turning the setting screw.

Isolating diaphragm kit The isolating diaphragm design ensures that no fluid enters the armature area, which gives the following advantages:The valve is resistant to aggressive fluids, impurities in the fluid and to calcarous and scale deposits.

The kit contains: Assembled isolating unit O-ring 4 screws Locking button Nut for the coil

Seal materialMedia temperature

Code no.[°C]

EPDM -20 – 50 042U1009

FKM 0 – 50 042U1010


Dan

foss

32U11

786.11


IC.PD.200.4D.02 | 14

Spare parts kit, NO The kit contains: Locking button and nut for the coilNO actuator unitO-ring for the armature unit

Type Seal material Code no.

EV220B 15 EV220B 50

EPDM 1) 032U0296

FKM 2) 032U0295

NBR 3) 032U02991) EPDM is recommended for water. (Steam max. 140 °C / 4 bar).2) FKM is suitable for oil and air. For water at max. +60 °C.3) NBR is suitable for oil, water and air.

Spare parts kit, NC

The kit contains: Locking button and nut for the coilArmature with valve plate and springO-ring for the armature tube2 O-rings for the equalizing orificeSpring and diaphragm2 O-rings for the pilot system

Brass versions


EV220B 15 EPDM 1) 032U1071

EV220B 15 FKM 2) 032U1072

EV220B 15 NBR 3) 032U6013

EV220B 20 EPDM 1) 032U1073

EV220B 20 FKM 2) 032U1074

EV220B 20 NBR 3) 032U6014

EV220B 25 EPDM 1) 032U1075

EV220B 25 FKM 2) 032U1076

EV220B 25 NBR 3) 032U6015

EV220B 32 EPDM 1) 032U1077

EV220B 32 FKM 2) 032U1078

EV220B 32 NBR 3) 032U6016

EV220B 40 EPDM 1) 032U1079

EV220B 40 FKM 2) 032U1080

EV220B 40 NBR 3) 032U6017

EV220B 50 EPDM 1) 032U1081

EV220B 50 FKM 2) 032U1082

EV220B 50 NBR 3) 032U60181) DN 15-32 approved by WRAS. DN 15-50 (Brass and DZR) approved by Attestation de Conformite Sanitaire (ACS) and PZH. DN 15-50 SS approved by PZH. EPDM is recommended for Water. (steam max. 140°C/ 4 bar) 2) FKM is suitable for oil and air. For water at max. 60 °C.3) NBR is suitable for oil, water and air.4) Dezincification resistant brass.

DZR brass 4) and stainless steel versions


EV220B 15 EPDM 1) 032U6320

EV220B 15 FKM 2) 032U6326

EV220B 20 EPDM 1) 032U6321

EV220B 20 FKM 2) 032U6327

EV220B 25 EPDM 1) 032U6322

EV220B 25 FKM 2) 032U6328

EV220B 32 EPDM 1) 032U6323

EV220B 32 FKM 2) 032U6329

EV220B 40 EPDM 1) 032U6324

EV220B 40 FKM 2) 032U6330

EV220B 50 EPDM 1) 032U6325

EV220B 50 FKM 2) 032U6331


Dan

foss

32U84

6.10

Dan

foss

32U97

0.10


IC.PD.200.4D.02 | 15

FunctionNO, brass, DZR brass and stainless steel

Coil voltage disconnected (open):When the voltage to the coil (2) is disconnected, the pilot orifice (4) is open. As the pilot orifice is larger than the equalizing orifice (7), the pressure across the diaphragm (5) drops and therefore it is lifted clear of the main orifice (6). The valve will be open for as long as the minimum differential pressure across the valve is maintained, and for as long as the voltage to the coil is disconnected.

Coil voltage connected (closed):When voltage is applied to the coil, the valve plate (3) is pressed down against the pilot orifice (4). The pressure across the diaphragm (5) is built up via the equalizing orifice (7). The diaphragm closes the main orifice (6) as soon as the pressure across the diaphragm is equivalent to the inlet pressure. The valve will be closed for as long as there is voltage to the coil.

Function NC, brass, DZR brass and stainless steel

Coil voltage disconnected (closed):When the voltage is disconnected, the valve plate (3) is pressed down against the pilot orifice (4) by the armature spring (2). The pressure across the diaphragm (5) is built up via the equalizing orifice (7). The diaphragm closes the main orifice (6) as soon as the pressure across the diaphragm is equivalent to the inlet pressure. The valve will be closed for as long as the voltage to the coil is disconnected.

Coil voltage connected (open):When voltage is applied to the coil (1), the pilot orifice (4) is opened. As the pilot orifice is larger than the equalizing orifice (7), the pressure across the diaphragm (5) drops and therefore it is lifted clear of the main orifice (6). The valve is now open for unimpeded flow and will be open for as long as the minimum differential pressure across the valve is maintained, and for as long as there is voltage to the coil.

1. Coil2. Armature spring3. Valve plate4. Pilot orifice5. Diaphragm6. Main orifice7. Equalizing orifice

1. Coil2. Armature3. Valve plate4. Pilot orifice5. Diaphragm6. Main orifice7. Equalizing orifice


20W W

W

W

12

IC.PD.200.4D.02 | 16

Capacity diagrams:

Example, air:Capacity for EV220B 15B at inlet pressure (p1) of 5 bar and outlet pressure (p

2) of 3.5 bar:

Approx. 245 Nm3/h

Example, water:Capacity for EV220B 15B at differentialpressure of 3 bar. Approx. 7 m3/h

solenoid valve - types ev220b 15-50 and ev220bw 40-50 · © danfoss | dcs (az) | 2018.07 on off 24h...

Documents